The Golden Word Master: The Four Heroes and the Innocent Bystander with the Unique Cheat

In an RPG-like fantasy world consumed by warring nations and racial discrimination, the human kingdom summons five high school students from 21st-century Japan for assistance in their conflict with the demonkin. Now those students, with their experience of MMORPGs at their disposal, will hone their skills to protect the human kingdom of Edea. However, this isn't their story. Out of the five students, four of them were given the title of Hero and the fifth one the title of Innocent Bystander. He had been summoned by accident since he sat near the other four students. His name is Hiiro Okamura, an aloof bookworm with traveling and reading as his raison d'etre. Hiiro sees no reason to help the human kingdom in their offensive war with the demonkin, seeing that he isn't a Hero and th...